Radial Control Operator: Always show the property name + value on the header

The radial control operator is commonly used for setting sculpt brush Size and Strength
settings. However, when using it, it can often be difficult to remember which hotkey
is responsible for which setting, meaning that you can often accidentally modify the
wrong setting without knowing it (or even what new value you've set it to).

This commit makes it so that the property name and the current value are always shown
on the header. Previously this info was only shown when the doing numeric input.
(It also fixes a bug where the numeric input print would hang around even after it
wasn't being used).

1 files changed, 35 insertions, 7 deletions

diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index 179677a0cb1..b6ea4204a2e 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -3902,12 +3902,39 @@ static void radial_control_update_header(wmOperator *op, bContext *C)
 	char msg[WM_RADIAL_CONTROL_HEADER_LENGTH];
 	ScrArea *sa = CTX_wm_area(C);
 	Scene *scene = CTX_data_scene(C);
-
-	if (sa && hasNumInput(&rc->num_input)) {
-		char num_str[NUM_STR_REP_LEN];
-		outputNumInput(&rc->num_input, num_str, &scene->unit);
-		BLI_snprintf(msg, WM_RADIAL_CONTROL_HEADER_LENGTH, "%s: %s", RNA_property_ui_name(rc->prop), num_str);
-		ED_area_headerprint(sa, msg);
+	
+	if (sa) {
+		if (hasNumInput(&rc->num_input)) {
+			char num_str[NUM_STR_REP_LEN];
+			outputNumInput(&rc->num_input, num_str, &scene->unit);
+			BLI_snprintf(msg, WM_RADIAL_CONTROL_HEADER_LENGTH, "%s: %s", RNA_property_ui_name(rc->prop), num_str);
+			ED_area_headerprint(sa, msg);
+		}
+		else {
+			const char *ui_name = RNA_property_ui_name(rc->prop);
+			switch (rc->subtype) {
+				case PROP_NONE:
+				case PROP_DISTANCE:
+					BLI_snprintf(msg, WM_RADIAL_CONTROL_HEADER_LENGTH, "%s: %.4f", ui_name, rc->current_value);
+					break;
+				case PROP_PIXEL:
+					BLI_snprintf(msg, WM_RADIAL_CONTROL_HEADER_LENGTH, "%s: %d", ui_name, (int)rc->current_value); /* XXX: round to nearest? */
+					break;
+				case PROP_PERCENTAGE:
+					BLI_snprintf(msg, WM_RADIAL_CONTROL_HEADER_LENGTH, "%s: %3.1f%%", ui_name, rc->current_value);
+					break;
+				case PROP_FACTOR:
+					BLI_snprintf(msg, WM_RADIAL_CONTROL_HEADER_LENGTH, "%s: %1.2f", ui_name, rc->current_value);
+					break;
+				case PROP_ANGLE:
+					BLI_snprintf(msg, WM_RADIAL_CONTROL_HEADER_LENGTH, "%s: %3f", ui_name, RAD2DEGF(rc->current_value)); // XXX: 2dp is enough
+					break;
+				default:
+					BLI_snprintf(msg, WM_RADIAL_CONTROL_HEADER_LENGTH, "%s", ui_name); /* XXX: No value? */
+					break;
+			}
+			ED_area_headerprint(sa, msg);
+		}
 	}
 }
 
@@ -4124,12 +4151,12 @@ static void radial_control_paint_cursor(bContext *C, int x, int y, void *customd
 		glutil_draw_lined_arc(0.0, (float)(M_PI * 2.0), rmin, 40);
 
 	BLF_size(fontid, 1.5 * fstyle_points, 1.0f / U.dpi);
-	BLF_width_and_height(fontid, str, strdrawlen, &strwidth, &strheight);
 	BLF_enable(fontid, BLF_SHADOW);
 	BLF_shadow(fontid, 3, 0.0f, 0.0f, 0.0f, 0.5f);
 	BLF_shadow_offset(fontid, 1, -1);
 
 	/* draw value */
+	BLF_width_and_height(fontid, str, strdrawlen, &strwidth, &strheight);
 	BLF_position(fontid, -0.5f * strwidth, -0.5f * strheight, 0.0f);
 	BLF_draw(fontid, str, strdrawlen);
 
@@ -4614,6 +4641,7 @@ static int radial_control_modal(bContext *C, wmOperator *op, const wmEvent *even
 	}
 
 	ED_region_tag_redraw(CTX_wm_region(C));
+	radial_control_update_header(op, C);
 
 	if (ret != OPERATOR_RUNNING_MODAL)
 		radial_control_cancel(C, op);